Process for the preparation of cationized polyvinyl alcohol

Details Process for the preparation of cationized polyvinyl alcohol Process for the preparation of cationized polyvinyl alcohol

1986-12-29

1989-04-18

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 62, 525374, C08F 800

Patent

active

048228516

ABSTRACT:
A process for the preparation of cationized polyvinyl alcohol (PVA) by reaction of alkylidene epoxides with PVA in alkaline medium in the presence of water, in which the reaction mixture contains 11 to 30 weight % of water, based on its total amount, and 1 to 4 weight % of an alkali metal or alkaline earth metal hydroxide or alkaline earth metal oxide, based on the quantity of PVA. As the cationizing agent there are used alkylidene epoxides or their mixtures having the general formula ##STR1## wherein n - 1, 2 or 3, R.sub.1, R.sub.2 and R.sub.3 represent the same or different alkyl residues having 1 to 18 carbon atoms or R.sub.1 represents the benzyl or --C.sub.2 H.sub.4 OH, and X.sup.- denotes chloride, bromide, sulfate or acetate.

REFERENCES:
patent: 3121607 (1964-02-01), Ohno et al.
patent: 3684784 (1972-08-01), Marze
patent: 3685953 (1972-08-01), Curelier
patent: 3959406 (1976-05-01), Tsuji et al.
patent: 4109068 (1978-08-01), Allen
patent: 4127563 (1978-11-01), Rankin et al.
patent: 4182804 (1980-01-01), Serboli et al.
patent: 4281109 (1981-07-01), Jarowenko et al.
patent: 4308189 (1981-12-01), Moritani et al.
patent: 4311805 (1982-01-01), Moritani et al.
patent: 4567221 (1986-01-01), Maruyama et al.
patent: 4645794 (1987-02-01), Davis et al.
Chem. Abstracts, 77 (1972): 89950.

Affiliated with

Also associated with

Rating

Process for the preparation of cationized polyvinyl alcohol does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of cationized polyvinyl alcohol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of cationized polyvinyl alcohol will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2397505